Call it choke, or nerves, but Senator Marco Rubio confirmed what many have suspected and that is he is a robotic and shallow candidate not ready to lead his party in the race for the White House.
Under a withering cross from Governor Chris Christie, the witness cracked, with Senator Rubio repeating four times a memorized diatribe against President Obama.
Suddenly 'big mo' abndoned the third place Iowa finisher and the talk till Tuesday will be about the halting and erratic performance and the resulting deer in the headlights stare.
For the other candidates, a mostly solid night with Donald Trump and Jeb Bush having a good night, while Governor John Kasich widely thought to have advanced his cause.
The analysts on all the nets agreed. Marco Rubio had a bad night.